Several common data backup solutions

Common data backup and recovery methods include the following:

1. Data backup: Data backup (Backup) refers to copying the original data (program) on the computer hard disk to On removable media (Removable Media), such as disks, tapes, optical disks, etc., in the event of data loss or system disaster, the data copied on the removable media will be restored to the hard disk, thereby protecting the computer's system data and application data.

2. Data recovery: Data recovery (Recover) is the reverse process of data backup, which is the operation of restoring backed up data to the hard disk

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3. Data archiving: Data archiving (Archive) copies hard disk data to removable media. Unlike data backup, data archiving deletes the original data from the hard disk and releases it after completing the copying work. hard disk space. Data archiving generally operates on data related to the year or a certain project. At the end of a year or when a certain project is completed, the relevant data is stored on removable media for future query and statistics, while freeing up precious hard disks. space.

3. Archive recovery: Archive recovery (Retrieve) is the reverse operation of data archiving, which writes the archived data back to the hard disk.

4. Online backup: Online backup (On-line backup) refers to the backup of running databases or applications. Usually, backup operations are prohibited for open databases and applications. However, some computers now Application systems require 24-hour operation (such as a bank's ATM business), so data storage management software is required to back up online databases and applications.

5. Offline backup: Off-line backup refers to backing up the data after the database SHUTDOWN or the application is closed. Offline backup usually uses full backup.

6. Full backup: Full backup is a type of backup strategy. Perform a full data backup operation.

7. Incremental backup: Incremental backup is a type of backup strategy compared to full backup. It only backs up the amount of data changes since the last backup.

8. Parallel technology: Parallelism refers to backing up/restoring different data sources to the same backup device/hard disk at the same time. Parallel technology is an important parameter for examining the performance of data storage management software. Some manufacturers' software can only support parallel backup, while others can achieve parallel backup and recovery; and truly effective parallel technology will make full use of backup equipment. The backup speed (bandwidth) enables limited time backup of large amounts of data.

9. Data cloning: Data cloning (Clone) is an important means to achieve disaster recovery. By backing up the original data to two removable media at the same time, one of the backup data (Clone) Transfer to offices with different geographical locations for storage. If a major disaster occurs in the computer system, such as a fire, and the backup equipment and backup data connected to the system are damaged, important data can be restored on another system. , to ensure the normal operation of the business. All data storage management software provides cloning functionality.